Não informado. (1959). Welding Production. British Welding Research Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Welding Production. Cambridge, Inglaterra: British Welding Research Association, 1959.
Lua MLA (8ú heag.)Não informado. Welding Production. British Welding Research Association, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.